JP4252790B2 - Male connector for guide wire - Google Patents

Male connector for guide wire Download PDF

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Publication number
JP4252790B2
JP4252790B2 JP2002323954A JP2002323954A JP4252790B2 JP 4252790 B2 JP4252790 B2 JP 4252790B2 JP 2002323954 A JP2002323954 A JP 2002323954A JP 2002323954 A JP2002323954 A JP 2002323954A JP 4252790 B2 JP4252790 B2 JP 4252790B2
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Prior art keywords
male connector
core wire
conductive member
insulating material
connector according
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JP2002323954A
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JP2003225312A (en
Inventor
オラ・ハンマルストロム
パール・ヴォン・マルムボルイ
パール・グスタフソン
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ラディ・メディカル・システムズ・アクチェボラーグ
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Priority claimed from SE0103696A external-priority patent/SE523337C2/en
Priority claimed from US09/986,117 external-priority patent/US6908442B2/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/01Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/09Guide wires
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/30Input circuits therefor
    • A61B5/303Patient cord assembly, e.g. cable harness
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22038Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with a guide wire
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0219Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/22Arrangements of medical sensors with cables or leads; Connectors or couplings specifically adapted for medical sensors
    • A61B2562/225Connectors or couplings
    • A61B2562/227Sensors with electrical connectors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00Connectors or connections adapted for particular applications
    • H01R2201/12Connectors or connections adapted for particular applications for medicine and surgery

Abstract

The invention relates to a male connector (1) wherein a plurality of conductors (5) run in parallel with a core wire (3). The conductors are attached to a respective conducting member (4). At least one of the conductors (5) are arranged to run along its corresponding conductive member (4) over a portion thereof so as to enhance the durability of the conductor. <IMAGE>

Description

【0001】
【発明の属する技術分野】
本発明は、ガイドワイヤー用の曲げ抵抗性雄型コネクタ、特に、心線、導体及び絶縁材料から成る全体形態が雄型コネクタ内で利用可能な空間を最適に使用することを可能にする形状の心線を有する曲げ抵抗性雄型コネクタに関する。
【0002】
【従来の技術】
ガイドワイヤーは当該技術分野にて全体として既知である。これらのガイドワイヤーは、例えば、閉塞の存在を検出するが、狭窄部位の断面は明らかにしない血管のX線撮影を行うことができる冠状血管の病気の治療に関して使用される。狭窄部位の重大さの程度を診断する最良の方法は狭窄部位の上流及び下流にて血圧を測定をすることであると考えられている。この場合、圧力測定センサを対象とする領域に配置するためガイドワイヤーが使用される。ガイドワイヤーが配置されたならば、カテーテルをガイドワイヤーに沿って摺動させ、次に、バルーン拡張法を行うことができる。ガイドワイヤーの末端の圧力測定センサからの電気信号がガイドワイヤー内に埋め込んだ導体を通じてガイドワイヤーの基端の雄型コネクタに伝送される。使用時、雄型コネクタは雌型コネクタに接続され、圧力測定センサからの信号はインターフェースに伝送され、該インターフェースがその信号を変換し且つその信号をオペレータが所望の形態にて提供する。
【0003】
ガイドワイヤーの基端に配置された雄型コネクタは、基本的に、心線と、複数の導体と、複数の導電性部材と、これらの間の絶縁材料とを備えている。雄型コネクタが雌型コネクタに接続されたとき、導電性部材は電気信号を雄型コネクタの導体から雌型コネクタ内部の同様の導電性部材に伝送する。従来通りガイドワイヤーを通って伸びる心線は、曲がりを防止し、ガイドワイヤーに強度を提供し且つガイドワイヤーを共に保持するために使用される。特に、雄型コネクタを雌型コネクタ内に挿入するとき、雄型コネクタが過剰に曲がり又は雄型コネクタ内の細い導体を傷付ける顕著な虞れが存在する。このため、雄型コネクタ内の心線は、通常、ステンレススチールのような高弾性係数の材料で出来ている。かかる雄型コネクタの例は米国特許第5,178,159号及び米国特許第5,938,624号に開示されている。
【0004】
【発明が解決しようとする課題】
上記の説明から、導体及び絶縁体がガイドワイヤー内で嵌まるのに十分なスペースを残しつつ、雄型コネクタ内で多量の高強度材料が提供されるようにするため、心線は可能な限り大きくなければならないことが明らかである。米国特許第5,178,159号及び米国特許第5,938,624号において、心線は筒状であり、導体が心線の外部に配置されると考えられる。この心線の形状の場合、心線と導体とから成る全体形態は、心線及び細い導体自体、実際に利用可能な空間を最適に利用せずに、雄型導体内の空間の広い部分を占めることになる、すなわち、換言すれば、雄型導体内に過剰の絶縁材料が存在することになる。この場合、ガイドワイヤー内で利用可能な空間はガイドワイヤーの上を摺動するカテーテルの直径によって制限されることに留意しなければならない。カテーテルはまた、ガイドワイヤーの基端から伸びる雄型コネクタの上を摺動するため、雄型コネクタの全体の寸法はこのカテーテルの直径によっても制限される。従来の小さいカテーテルの公称直径は0.355mmのように小さく、このことはかかるカテーテルと共に使用される雄型コネクタの直径の上限値を提供する。
【0005】
上述したように、心線は、従来、ガイドワイヤーの末端のセンサからガイドワイヤーの基端の雄型コネクタまで全経路に亙ってガイドワイヤーを貫通して伸びており、ガイドワイヤーの基端にて、心線は雄型コネクタに硬さを提供する。斯かる長い心線の場合、心線の最も経済的で且つ実用的な形状は円筒形であり、心線と導体とから成る全体形態は利用可能な空間の最適な程度以下を占め、その結果、雄型コネクタが雌型コネクタ内に挿入されたとき曲がり又は傷付く虞れを伴うという不利益な点があるにも拘らず、雄型コネクタ内の心線を円筒状の形状に保つことが従来の考えであった。
【0006】
その結果、心線と、導体と、絶縁材料とから成る全体形態が雄型コネクタ内の利用可能な空間を最適に使用する形状の心線を有する雄型コネクタが必要とされている。雄型コネクタからセンサまで伸びる心線の部分の円筒状の形状を保つためには、雄型コネクタは既存のガイドワイヤーの基端に取り付けることのできる別個のユニットを構成することが好ましい。勿論、上記の必要性は、雄型コネクタ内の心線がガイドワイヤーの他の部分内の心線と相違することを意味する。
【0007】
本発明の主目的は、導体に対する十分な空間を残しつつ、雄型コネクタ内でより高弾性係数の材料をより多量に提供することができる形状の心線を有する雄型コネクタを提供することである。
【0008】
本発明の第二の目的は、耐久性且つ曲げ抵抗があり、曲がらず雌型コネクタ内に容易に挿入される雄型コネクタを提供することである。
本発明の第三の目的は、雄型コネクタが曲がった場合でさえ、導体が損傷から保護される形状の心線を有する雄型コネクタを提供することである。
【0009】
本発明の第四の目的は、硬さが保持されて導電性部材の間に長い絶縁距離を許容する雄型コネクタを提供することである。
本発明の第五の目的は、既存のガイドワイヤーに別個に取り付け可能な雄型コネクタを提供することである。
【0010】
本発明の第六の目的は、空隙を最小限に抑えながら絶縁材料を充填することができ、よって防水性に富み且つ一定の品質を保持できる雄型コネクタを提供することである。
【0011】
上記の目的は、請求項1に記載された雄型コネクタにより達成される。本発明による雄型コネクタの好ましい実施の形態は、独立請求項に記載されている。
【0012】
【課題を解決するための手段】
本発明による雄型コネクタの1つの好ましい実施の形態は、心線と、複数の導電性部材と、複数の導体と、絶縁材料とを備えている。導体の各々がそれぞれの導電性部材に接続されている。ガイドワイヤーと同一の外径の環状である導電性部材が互いに長手方向に隔てられている。心線は円筒形ではないが、その外装面の一部は平坦であり、これにより心線にD字形の断面を提供する。
【0013】
雄型コネクタを組み立てたとき、導体はD字形断面の直線状脚部の外側に配置される。このため、雄型コネクタをガイドワイヤーの基端に取り付け、D字形心線を短い距離だけガイドワイヤーに挿入したとき、雄型コネクタの末端の導体は円筒状ガイドワイヤーの内面とD字形の心線との間に形成された細長いキャビティ内に配置される。環状導電性部材内にある導体のより基端側の部分は導電性部材とD字形の形状の心線との間に形成されたキャビティ内に相応する状態で配置される。
【0014】
【発明の実施の形態】
図1には、本発明による雄型コネクタ1が図示されている。該雄型コネクタ1は、ガイドワイヤー2の基端に配置されている。雄型コネクタ1は、基本的に、心線3と、複数の導電性部材4と、複数の導体5とを備えている。
【0015】
ガイドワイヤー2と同一の外径の環状である導電性部材4は、互いに長手方向に隔てられている。雄型コネクタ1を組み立てるとき、導体5の各々はそれぞれの導電性部材4に電気的に接続され、心線3と導電性部材4との間に絶縁材料6が提供される。絶縁材料6は導電性部材4内で導体5を固定し且つ導電性部材4を心線3から絶縁する。
【0016】
図2において、図1の雄型コネクタ1には、追加の連続的な外側絶縁材料7が設けられており、絶縁材料の外面は導電性部材4の外面と同程度に伸びている。絶縁材料7は、導体5及び導電性部材4を互いに絶縁し、また、雄型コネクタに対し追加的な硬さを提供する。
【0017】
図1及び図2にて、雄型コネクタ1と心線3との間に僅かな空隙が提供され、該心線はガイドワイヤー2の他の部分を貫通して伸びている、すなわち、雄型コネクタ1の心線3は、図1又は図2に図示しないガイドワイヤー2のより末端で且つ遥かに長い部分にて心線の一体部分ではないことが分かる。従って、この僅かな空隙は雄型コネクタ1を全体的なガイドワイヤー組立体の別個の部分とみなすことができ、このことは従来技術の設計と相違するものである。この特徴による得られる格別の効果を以下に説明する。
【0018】
図1及び図2から、導体5の基端は相応する導電性部材4の基端と接続されている、すなわち、導体5の隣接する基端部分は導電性部材4及びこの導電性部材4内の絶縁材料6によって支持されることが認識される。導電性部材4は比較的硬く、雄型コネクタ1が曲がったとき、導電性部材4と導体5との間の接続部には、導体5が導電性部材4の末端に取り付けられた場合に受けるであろうよりも小さい曲げ応力が加わる。
【0019】
ガイドワイヤー組立体の全体が図3に図示されており、雄型コネクタ1はガイドワイヤー2の基端に取り付けられている。ガイドワイヤー2はバルーンカテーテル8内に挿入される。ガイドワイヤー2の末端にはセンサ9がある。雄型コネクタ1は雌型コネクタ10内に挿入する。雌型コネクタ10はモニタ装置11に電気的に接続可能である。実際には、ガイドワイヤー2の末端を本体内に、例えば、大腿動脈の開口部内に挿入する。外科医が適宜な位置に配置したならば、所望の型式のカテーテル8をガイドワイヤー2まで案内する。使用時、センサ9からの信号をガイドワイヤー2内に包み込まれた導体によって雄型コネクタ1の導電性部材に伝送する。次に、これら信号は雄型コネクタ1の導電性部材から雌型コネクタ10内の同様の導電性部材に伝送する。次に、これら信号はモニタ装置11によって外科医に提供される。
【0020】
図4には、従来技術の設計による雄型コネクタの断面図が図示されている。この場合、3つの導体が雄型コネクタ内で偏心状態に配置された円筒状の心線の周りに対称に配置される。導電性部材が心線及び3つの導体を取り巻き、絶縁材料は雄型コネクタの内部空間の残りの部分を充填する。かかる従来技術の設計による主要な不利益な点は、図4に図示した雄型コネクタが、例えば、雌型コネクタに挿入する間に曲がったならば、雄型コネクタの全ての部分は曲げ応力を受けることである。この場合、比較的柔軟な絶縁材料内に埋め込まれた細く且つ敏感な導体はより硬い心線と導電性部材との間で圧搾される可能性があり、このことはこれら導体の1つ又は幾つかが損傷し、又は破断する虞れを伴う。
【0021】
図5には、本発明による雄型コネクタの1つの好ましい実施の形態が図示されている。この場合、均一なD字形の断面を有する心線3が雄型コネクタの中央部分を構成する。この場合、3つの導体5がD字形の心線3の平坦部分の外側に配置され、円筒状の導電性部材4が導体5及びD字形の心線3を取り巻く。円筒状の導電性部材4の内部空間の残りの部分は絶縁材料6で充填され、導電性部材4とD字形の心線3の湾曲部分との間には最小量の絶縁材料6が設けられている。
【0022】
心線3のD字形の形状は、円筒状導電性部材4の内面とD字形の心線3の平坦部分との間にキャビティを提供する。導体5が内部に配置されるこのキャビティは雄型コネクタが曲がった時でさえ、実際上、無傷のままである。このことは、雄型コネクタに曲げ応力が加わったときでさえ、導体5が心線3と導電性部材4との間にて圧搾される虞れが存在しないことを意味し、このことは、例えば、雌型コネクタ内に挿入する間、導体5の損傷を明らかに防止することになる。図5から、かかる保護キャビティの必要条件はD字形の断面の直線状脚部の端部が導電性部材4の付近に配置されること、すなわち導電性部材4の内面とD字形心線3のこれらの部分との間に最小量の絶縁材料6が存在することであることが明らかである。本明細書にて「キャビティ」という用語は文字通りに解釈すべきではない。図5から明らかであるように、キャビティは連続的な絶縁材料6にて充填されている。
【0023】
図5の心線3の拡大部分が図5aに図示されている。図5aには、心線3には別個の絶縁材料層12が設けられていることが示してある。このため、心線3は絶縁心線3とみなすことができ、D字形心線3の湾曲部分と導電性部材4との間に提供される絶縁材料6の量を、実際上、零まで減少させることができる。かかる絶縁材料12の一例は、ポリマーマトリックス内に保持されたセラミック粒子である。1つの代替例として、絶縁材料12はセラミック状態に酸化させた金属から成るものとすることができる。例えば、心線3はチタンから形成し、その表面を酸化して二酸化チタンにし、又は、心線3はAl23に酸化させたアルミニウム被覆を有する金属で形成してもよい。また、心線3を絶縁材料にて製造することも可能であり、この場合、D字形心線3の湾曲部分と導電性部材4との間に絶縁材料は何ら設ける必要はない。心線3及び(又は)絶縁材料12に対する材料を適正に選ぶことにより、導体5は圧着技術により導電性部材4に接続することができる。
【0024】
図5bには、図5の導体5の拡大部分が図示されている。図5bには、導体5の各々には別個の絶縁材料層13が設けられることが示してある。このため、導体5は絶縁した導体5とみなすことができ、このことは、導体5は互いに極く近接して配置することができる、すなわちその間に絶縁材料6が設けられないことを意味する。
【0025】
上述したように、ガイドワイヤー用の雄型コネクタの従来の設計は、心線が雄型コネクタ内に伸びるようにすることである、すなわち雄型コネクタの心線はガイドワイヤー内の心線の一体部分である。一例として、ガイドワイヤーは長さ300cm及び直径0.355mmのようにかなり長く且つ細いであろうから、ガイドワイヤー内部に円筒状の心線を有することが実際的で且つ経済的であると思われる。かかる従来の0.355mmガイドワイヤー内の心線は典型的に、直径が僅かに0.15mmである。かかる細い円筒状の心線が雄型コネクタ内に伸びるようにし且つD字形の形状の断面を形成し得るように心線の外装面の一部を単に平坦にするだけでは、上述した特殊な有利な点は得られない。このことは、従来の設計による心線が図示される図4から容易に認識される。かかる小さい直径を有する心線の外装面の一部分を単に剥ぎ取るだけでは、勿論、雄型コネクタが曲がったとき、損傷の虞れを伴わずに、導体が内部に位置するキャビティを形成することはできない。雄型コネクタ内に伸び且つこの部分からD字形断面のような所望の断面内に伸びる心線の部分を拡張させることは、着想可能であり且つ本発明の範囲に属することではあるが、より優れた解決策は、既存のガイドワイヤーに別個に取り付け可能である雄型コネクタを提供することである。
【0026】
図6において、本発明による雄型コネクタの第一の代替的な実施の形態の断面図が図示されている。この実施の形態において、心線3には、導体5が内部に受け入れられる樋形状の凹所が設けられている。この樋形状の凹所により形成されたキャビティは、雄型コネクタが曲がったならば、導体5が導電性部材4と心線3との間にて圧搾されるのを明らかに、保護する。
【0027】
図6において、導体5は、全て心線3の外装面の単一の凹所により形成された共通のキャビティ内に配置されている。しかし、コネクタ5の各々は別個のキャビティ内に配置してもよい。この型式の形態は、図7に図示されており、この場合、3つの凹所が心線3の外装面に設けられている。これら3つの凹所の各々が単一の導体5を受け入れる。
【0028】
上述したように、本発明の主目的は、高弾性係数を有する多量の材料を雄型コネクタ内に提供し、心線、従って雄型コネクタが可能な限り硬いようにする形状の心線を有する雄型コネクタを提供することである。この目的に従って、内部に導体が配置される1つ又は幾つかの長手方向穴にて上述した凹所に置換することも考えられる。かかる形態の一例が図8に図示されており、この場合、心線3には、導体5が受け入れられる中央穴の形態のキャビティが設けられている。
【0029】
本発明の図示した実施の形態から、導電性部材4は、製造上の観点から、心線3に支持されているとみなすことができ、それは、心線3の外装面の少なくとも2つの箇所は心線3を導電性部材4内で半径方向に位置決めする方法は1つしかないような位置にあるからである。このため、心線3は自動中心決め又は自動中心決め心線3として説明することができ、従って、本発明の雄型コネクタ1の製造時に何ら追加的な位置決め工程は不要である。図4から、この有利な点は、心線を導電性部材の中心又は導電性部材の内部の何らかのその他の位置に慎重に配置しなければならない、従来技術の設計と相違するものであることが明らかである。
【0030】
図9には、別の形態の導体5を備える雄型コネクタ1が図示されている。図示した形態において、導体5の各々はそれぞれの導電性部材4に接続する前に、180°のループ状に引出されている。試験の結果、導電性部材4の末端に(導体5が接続される箇所)に戻る前に、雄型コネクタ1の基端方向に伸びるこのループは導体5の耐久性を更に向上させることが分かった。特に、図9による導体の配置を上述した心線の断面の1つと組み合わせたとき、驚く程に曲げによる影響を受け難い雄型コネクタが提供される。
【0031】
図9の導体の配置の断面は明らかに追加的な導体の断面を示し、それは、導体のループの各々が一方が前方に伸び、もう一方が後方に伸びる2つの導体を保持しているからである。かかる断面の一例が図10に図示されており、図5によるD字形の心線が図9による導体の配置と組み合わされている。この場合、3つの導体5が導電性部材4内で4つの導体の断面を生じさせる。
【0032】
要約すれば、心線と、導体とから成る全体形態がほぼ円形の断面を提供する設計を有する本発明の雄型コネクタによれば、従来技術の設計と比較して、雄型コネクタの内部に高弾性係数のより多くの材料を提供することができる。この特徴は本発明による雄型コネクタを耐久性があり且つ曲げ抵抗性であるようにする一方、このことは、雄型コネクタを曲げ、これにより導体及び雄型コネクタのその他の部分を損傷させる虞れが最小の状態で雄型コネクタを雌型コネクタ内に挿入することを容易にする。
【0033】
更に、高弾性係数の多量の材料の存在により、雄型コネクタはより硬くなり、このことは、長手方向に隔てられた環状の導電性部材の間に硬さが維持された状態の長い絶縁距離が存在することを許容する。このことは、長い絶縁距離は導電性部材間の電流の漏洩の虞れが最小となることを意味するから、有利なことである。
【0034】
更に、高弾性係数の多量の材料の存在により、雄型コネクタ内の絶縁材料の量が少なくなり、このことは、絶縁材料を最小の空隙率にて充填することを許容する一方、このことは、防水性で且つ一定の品質の設計とすることになる。
【0035】
本発明は特定の実施の形態に関して説明し、また添付図面に図示したが、当該技術分野の当業者には、本明細書及び特許請求の範囲に記載された本発明の範囲内で多数の変更例及び改変例が具体化可能であることが明らかであろう。
【図面の簡単な説明】
【図1】ガイドワイヤーに取り付けられた本発明による雄型コネクタの図である。
【図2】余剰な絶縁材料が設けられた図1の雄型コネクタの図である。
【図3】カテーテル内で使用される雄型コネクタと、モニタ装置に接続された雌型コネクタとを備えるガイドワイヤーの図である。
【図4】従来技術による雄型コネクタの断面図である。
【図5】本発明による雄型コネクタの第一の実施の形態の断面図である。
5aは図5の心線の拡張部分の図である。
5bは図5の導体の拡張部分の図である。
【図6】本発明による雄型コネクタの第二の実施の形態の断面図である。
【図7】本発明による雄型コネクタの第三の実施の形態の断面図である。
【図8】本発明による雄型コネクタの第四の実施の形態の断面図である。
【図9】1つの代替的な導体の形態を有する雄型コネクタの図である。
【図10】図9による雄型コネクタの断面図である。
【符号の説明】
1 雄型コネクタ 2 ガイドワイヤー
3 心線 4 導電性部材
5 導体 6 絶縁材料
7 外側絶縁材料 8 バルーンカテーテル
9 センサ 10 雌型コネクタ
11 モニタ装置 12、13 絶縁材料層
[0001]
BACKGROUND OF THE INVENTION
The present invention provides a bend resistant male connector for a guide wire, particularly a shape that allows the overall form of core wire, conductor and insulating material to optimally use the space available within the male connector. The present invention relates to a bending-resistant male connector having a core wire.
[0002]
[Prior art]
Guidewires are generally known in the art. These guidewires are used, for example, for the treatment of coronary vascular diseases that can be performed to x-ray a blood vessel that detects the presence of an obstruction but does not reveal a cross-section of the stenotic site. It is believed that the best way to diagnose the severity of a stenosis site is to measure blood pressure upstream and downstream of the stenosis site. In this case, a guide wire is used to place the pressure measurement sensor in the target area. Once the guidewire is in place, the catheter can be slid along the guidewire and then balloon dilatation can be performed. An electrical signal from the pressure measuring sensor at the distal end of the guide wire is transmitted to the male connector at the proximal end of the guide wire through a conductor embedded in the guide wire. In use, the male connector is connected to the female connector and the signal from the pressure measurement sensor is transmitted to the interface, which converts the signal and provides the signal in the desired form by the operator.
[0003]
The male connector disposed at the proximal end of the guide wire basically includes a core wire, a plurality of conductors, a plurality of conductive members, and an insulating material therebetween. When the male connector is connected to the female connector, the conductive member transmits an electrical signal from the conductor of the male connector to a similar conductive member within the female connector. Conventionally, the core wire that extends through the guide wire is used to prevent bending, provide strength to the guide wire, and hold the guide wire together. In particular, when a male connector is inserted into a female connector, there is a significant risk that the male connector will bend excessively or damage thin conductors in the male connector. For this reason, the core wire in the male connector is usually made of a material having a high elastic modulus such as stainless steel. Examples of such male connectors are disclosed in US Pat. No. 5,178,159 and US Pat. No. 5,938,624.
[0004]
[Problems to be solved by the invention]
From the above description, as much as possible, the core wire should be provided so that a large amount of high-strength material is provided in the male connector, leaving enough space for the conductor and insulator to fit in the guide wire. It is clear that it must be large. In U.S. Pat. No. 5,178,159 and U.S. Pat. No. 5,938,624, it is considered that the core wire is cylindrical and the conductor is disposed outside the core wire. In the case of the shape of the core wire, the entire configuration of the core wire and the conductor does not optimally use the space that can be actually used, and the space that can actually be used, and the wide space in the male conductor is not used. That is, in other words, there will be an excess of insulating material in the male conductor. In this case, it should be noted that the space available in the guidewire is limited by the diameter of the catheter sliding over the guidewire. Since the catheter also slides over a male connector that extends from the proximal end of the guidewire, the overall dimensions of the male connector are also limited by the diameter of the catheter. The nominal diameter of conventional small catheters is as small as 0.355 mm, which provides an upper limit on the diameter of the male connector used with such catheters.
[0005]
As described above, conventionally, the core wire extends through the guide wire from the sensor at the distal end of the guide wire to the male connector at the proximal end of the guide wire, and extends to the proximal end of the guide wire. Thus, the core wire provides hardness to the male connector. In the case of such a long core, the most economical and practical shape of the core is cylindrical, and the overall form of core and conductor occupies less than the optimum degree of available space, and as a result In spite of the disadvantage that the male connector is bent or damaged when inserted into the female connector, the core wire in the male connector can be kept in a cylindrical shape. It was a conventional idea.
[0006]
As a result, there is a need for a male connector having a core that is shaped so that the overall configuration of the core, conductor, and insulating material optimally uses the available space within the male connector. In order to maintain the cylindrical shape of the portion of the core that extends from the male connector to the sensor, the male connector preferably constitutes a separate unit that can be attached to the proximal end of an existing guidewire. Of course, the above need means that the core wire in the male connector is different from the core wires in other parts of the guide wire.
[0007]
The main object of the present invention is to provide a male connector having a core wire having a shape capable of providing a larger amount of a higher elastic modulus material in the male connector while leaving sufficient space for the conductor. is there.
[0008]
A second object of the present invention is to provide a male connector that is durable and resistant to bending, and that can be easily inserted into a female connector without bending.
A third object of the present invention is to provide a male connector having a shaped core wire that protects the conductor from damage even when the male connector is bent.
[0009]
A fourth object of the present invention is to provide a male connector that retains hardness and allows a long insulation distance between conductive members.
A fifth object of the present invention is to provide a male connector that can be separately attached to an existing guidewire.
[0010]
A sixth object of the present invention is to provide a male connector that can be filled with an insulating material while minimizing the air gap, and is therefore waterproof and can maintain a certain quality.
[0011]
The above object is achieved by a male connector according to claim 1. Preferred embodiments of the male connector according to the invention are described in the independent claims.
[0012]
[Means for Solving the Problems]
One preferred embodiment of the male connector according to the present invention comprises a core wire, a plurality of conductive members, a plurality of conductors, and an insulating material. Each of the conductors is connected to a respective conductive member. Conductive members that are annular and have the same outer diameter as the guide wire are spaced apart from each other in the longitudinal direction. Although the core is not cylindrical, a portion of its exterior surface is flat, thereby providing a D-shaped cross section for the core.
[0013]
When the male connector is assembled, the conductor is placed outside the straight leg with a D-shaped cross section. For this reason, when the male connector is attached to the proximal end of the guide wire and the D-shaped core wire is inserted into the guide wire for a short distance, the terminal conductor of the male connector is the inner surface of the cylindrical guide wire and the D-shaped core wire. In an elongated cavity formed between the two. The more proximal portion of the conductor within the annular conductive member is correspondingly disposed within the cavity formed between the conductive member and the D-shaped core.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a male connector 1 according to the present invention. The male connector 1 is disposed at the proximal end of the guide wire 2. The male connector 1 basically includes a core wire 3, a plurality of conductive members 4, and a plurality of conductors 5.
[0015]
The conductive members 4 having the same outer diameter as the guide wire 2 are spaced apart from each other in the longitudinal direction. When the male connector 1 is assembled, each of the conductors 5 is electrically connected to the respective conductive member 4, and an insulating material 6 is provided between the core wire 3 and the conductive member 4. The insulating material 6 fixes the conductor 5 in the conductive member 4 and insulates the conductive member 4 from the core wire 3.
[0016]
In FIG. 2, the male connector 1 of FIG. 1 is provided with an additional continuous outer insulating material 7 whose outer surface extends to the same extent as the outer surface of the conductive member 4. Insulating material 7 insulates conductor 5 and conductive member 4 from each other and provides additional hardness to the male connector.
[0017]
1 and 2, a slight gap is provided between the male connector 1 and the core wire 3, which extends through the other part of the guide wire 2, ie male It can be seen that the core wire 3 of the connector 1 is not an integral part of the core wire at the far end and much longer part of the guide wire 2 not shown in FIG. 1 or FIG. Thus, this slight air gap allows the male connector 1 to be considered as a separate part of the overall guidewire assembly, which is different from prior art designs. The special effect obtained by this feature will be described below.
[0018]
1 and 2, the base end of the conductor 5 is connected to the base end of the corresponding conductive member 4, that is, the adjacent base end portion of the conductor 5 is within the conductive member 4 and the conductive member 4. It is recognized that it is supported by the insulating material 6. The conductive member 4 is relatively hard, and when the male connector 1 is bent, the connection between the conductive member 4 and the conductor 5 is received when the conductor 5 is attached to the end of the conductive member 4. Bending stress is smaller than would be.
[0019]
The entire guide wire assembly is shown in FIG. 3, and the male connector 1 is attached to the proximal end of the guide wire 2. The guide wire 2 is inserted into the balloon catheter 8. At the end of the guide wire 2 is a sensor 9. The male connector 1 is inserted into the female connector 10. The female connector 10 can be electrically connected to the monitor device 11. Actually, the distal end of the guide wire 2 is inserted into the main body, for example, into the opening of the femoral artery. Once the surgeon has placed it in place, the desired type of catheter 8 is guided to the guide wire 2. In use, a signal from the sensor 9 is transmitted to the conductive member of the male connector 1 by a conductor wrapped in the guide wire 2. These signals are then transmitted from the conductive member of the male connector 1 to a similar conductive member in the female connector 10. These signals are then provided to the surgeon by the monitoring device 11.
[0020]
FIG. 4 shows a cross-sectional view of a male connector according to the prior art design. In this case, the three conductors are arranged symmetrically around a cylindrical core wire arranged eccentrically in the male connector. A conductive member surrounds the core wire and the three conductors, and the insulating material fills the remainder of the internal space of the male connector. A major disadvantage of such prior art designs is that if the male connector shown in FIG. 4 is bent, for example, during insertion into the female connector, all parts of the male connector will experience bending stress. It is to receive. In this case, a thin and sensitive conductor embedded in a relatively soft insulating material can be squeezed between a harder core and the conductive member, which means that one or several of these conductors can be squeezed. There is a risk of damage or breakage.
[0021]
FIG. 5 illustrates one preferred embodiment of a male connector according to the present invention. In this case, the core wire 3 having a uniform D-shaped cross section constitutes the central portion of the male connector. In this case, the three conductors 5 are arranged outside the flat portion of the D-shaped core wire 3, and the cylindrical conductive member 4 surrounds the conductor 5 and the D-shaped core wire 3. The remaining portion of the inner space of the cylindrical conductive member 4 is filled with an insulating material 6, and a minimum amount of the insulating material 6 is provided between the conductive member 4 and the curved portion of the D-shaped core wire 3. ing.
[0022]
The D-shaped shape of the core wire 3 provides a cavity between the inner surface of the cylindrical conductive member 4 and the flat portion of the D-shaped core wire 3. This cavity in which the conductor 5 is placed remains practically intact even when the male connector is bent. This means that there is no risk of the conductor 5 being squeezed between the core wire 3 and the conductive member 4 even when bending stress is applied to the male connector, For example, the conductor 5 is clearly prevented from being damaged during insertion into the female connector. From FIG. 5, it can be seen that the requirement for such a protective cavity is that the end of the straight leg portion of the D-shaped cross section is located in the vicinity of the conductive member 4, that is, the inner surface of the conductive member 4 It is clear that there is a minimum amount of insulating material 6 between these parts. As used herein, the term “cavity” should not be interpreted literally. As is apparent from FIG. 5, the cavity is filled with a continuous insulating material 6.
[0023]
An enlarged portion of the core wire 3 of FIG. 5 is illustrated in FIG. 5a. FIG. 5 a shows that the core wire 3 is provided with a separate insulating material layer 12. For this reason, the core wire 3 can be regarded as the insulated core wire 3, and the amount of the insulating material 6 provided between the curved portion of the D-shaped core wire 3 and the conductive member 4 is actually reduced to zero. Can be made. An example of such an insulating material 12 is ceramic particles held in a polymer matrix. As an alternative, the insulating material 12 can be made of a metal oxidized to a ceramic state. For example, the core wire 3 may be formed of titanium and the surface thereof may be oxidized to titanium dioxide, or the core wire 3 may be formed of a metal having an aluminum coating oxidized to Al 2 O 3 . Moreover, it is also possible to manufacture the core wire 3 with an insulating material. In this case, it is not necessary to provide any insulating material between the curved portion of the D-shaped core wire 3 and the conductive member 4. By appropriately selecting materials for the core wire 3 and / or the insulating material 12, the conductor 5 can be connected to the conductive member 4 by a crimping technique.
[0024]
FIG. 5b shows an enlarged portion of the conductor 5 of FIG. FIG. 5 b shows that each conductor 5 is provided with a separate insulating material layer 13. For this reason, the conductor 5 can be regarded as an insulated conductor 5, which means that the conductors 5 can be arranged in close proximity to each other, ie no insulating material 6 is provided therebetween.
[0025]
As mentioned above, the conventional design of a male connector for a guide wire is to allow the core wire to extend into the male connector, i.e. the core wire of the male connector is an integral of the core wire in the guide wire. Part. As an example, the guidewire would be fairly long and thin, such as 300 cm long and 0.355 mm in diameter, so it would be practical and economical to have a cylindrical core inside the guidewire. The core wire in such a conventional 0.355 mm guidewire is typically only 0.15 mm in diameter. By simply flattening a portion of the outer surface of the core wire so that such a thin cylindrical core wire can extend into the male connector and form a D-shaped cross section, the special advantages described above can be obtained. I can't get that point. This can be easily recognized from FIG. 4 where the core wire according to the conventional design is shown. By simply peeling off a part of the outer surface of the core wire having such a small diameter, of course, when the male connector is bent, it is possible to form a cavity in which the conductor is located without risk of damage. Can not. Extending the portion of the core wire that extends into the male connector and extends from this portion into the desired cross-section, such as a D-shaped cross-section, is conceivable and within the scope of the present invention, but better An alternative solution is to provide a male connector that can be separately attached to an existing guidewire.
[0026]
In FIG. 6, a cross-sectional view of a first alternative embodiment of a male connector according to the present invention is illustrated. In this embodiment, the core wire 3 is provided with a bowl-shaped recess in which the conductor 5 is received. The cavity formed by this saddle-shaped recess clearly protects the conductor 5 from being squeezed between the conductive member 4 and the core wire 3 if the male connector is bent.
[0027]
In FIG. 6, the conductors 5 are all disposed in a common cavity formed by a single recess on the exterior surface of the core wire 3. However, each of the connectors 5 may be placed in a separate cavity. This type of form is illustrated in FIG. 7, in which three recesses are provided in the exterior surface of the core wire 3. Each of these three recesses receives a single conductor 5.
[0028]
As mentioned above, the main object of the present invention is to provide a large amount of material having a high modulus of elasticity in the male connector, having a core wire, and thus a core wire shaped so that the male connector is as stiff as possible. It is to provide a male connector. According to this purpose, it is also conceivable to replace the recesses mentioned above with one or several longitudinal holes in which conductors are arranged. An example of such a configuration is illustrated in FIG. 8, where the core 3 is provided with a cavity in the form of a central hole in which the conductor 5 is received.
[0029]
From the illustrated embodiment of the present invention, the conductive member 4 can be regarded as being supported by the core wire 3 from the viewpoint of manufacturing, and at least two locations on the exterior surface of the core wire 3 are This is because there is only one method of positioning the core wire 3 in the radial direction within the conductive member 4. For this reason, the core wire 3 can be described as auto-centering or auto-centering core wire 3, and therefore no additional positioning step is required when manufacturing the male connector 1 of the present invention. From FIG. 4, this advantage is different from prior art designs where the core must be carefully placed in the center of the conductive member or some other location within the conductive member. it is obvious.
[0030]
FIG. 9 shows a male connector 1 having another form of conductor 5. In the illustrated form, each of the conductors 5 is drawn out in a 180 ° loop before being connected to the respective conductive member 4. Test results show that this loop extending in the proximal direction of the male connector 1 further improves the durability of the conductor 5 before returning to the end of the conductive member 4 (where the conductor 5 is connected). It was. In particular, when the conductor arrangement according to FIG. 9 is combined with one of the above mentioned cross sections of the core wire, a male connector is provided that is surprisingly insensitive to bending.
[0031]
The conductor cross section of FIG. 9 clearly shows additional conductor cross sections because each of the conductor loops holds two conductors, one extending forward and the other extending backward. is there. An example of such a cross-section is shown in FIG. 10, where the D-shaped core wire according to FIG. 5 is combined with the conductor arrangement according to FIG. In this case, the three conductors 5 give rise to a cross-section of the four conductors in the conductive member 4.
[0032]
In summary, according to the male connector of the present invention having a design in which the overall configuration of the core and the conductor provides a substantially circular cross-section, compared to the prior art design, inside the male connector. More materials with higher modulus can be provided. This feature makes the male connector according to the present invention durable and bend resistant while this can bend the male connector and thereby damage the conductor and other parts of the male connector. This makes it easy to insert the male connector into the female connector in a state where this is minimal.
[0033]
Furthermore, the presence of a large amount of material with a high modulus of elasticity makes the male connector stiffer, which means a long insulation distance with the stiffness maintained between the longitudinally spaced annular conductive members. Is allowed to exist. This is advantageous because a long insulation distance means that the risk of current leakage between the conductive members is minimized.
[0034]
In addition, the presence of a large amount of material with a high modulus of elasticity reduces the amount of insulating material in the male connector, which allows the insulating material to be filled with minimal porosity, while this The design is waterproof and of a certain quality.
[0035]
While the invention has been described with reference to specific embodiments and illustrated in the accompanying drawings, those skilled in the art will recognize that numerous modifications may be made within the scope of the invention as described in the specification and claims. It will be apparent that examples and modifications can be implemented.
[Brief description of the drawings]
FIG. 1 is a view of a male connector according to the present invention attached to a guide wire.
2 is a view of the male connector of FIG. 1 provided with excess insulating material.
FIG. 3 is a view of a guide wire comprising a male connector used in a catheter and a female connector connected to a monitor device.
FIG. 4 is a cross-sectional view of a conventional male connector.
FIG. 5 is a cross-sectional view of a first embodiment of a male connector according to the present invention.
5a is a diagram of an expanded portion of the core wire of FIG.
5b is a diagram of an extended portion of the conductor of FIG.
FIG. 6 is a cross-sectional view of a second embodiment of a male connector according to the present invention.
FIG. 7 is a cross-sectional view of a third embodiment of a male connector according to the present invention.
FIG. 8 is a cross-sectional view of a fourth embodiment of a male connector according to the present invention.
FIG. 9 is a view of a male connector having one alternative conductor configuration.
10 is a cross-sectional view of the male connector according to FIG. 9;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Male connector 2 Guide wire 3 Core wire 4 Conductive member 5 Conductor 6 Insulating material 7 Outer insulating material 8 Balloon catheter 9 Sensor 10 Female connector 11 Monitor apparatus 12, 13 Insulating material layer

Claims (21)

ガイドワイヤー(2)用の雄型コネクタ(1)であって、心線(3)と、前記心線(3)に沿って長手方向に隔てられた複数の導電性部材(4)と、該心線(3)に沿って配置された複数の導体(5)とを備え、前記導体(5)は各々対応する導電性部材(4)に接続された雄型コネクタにおいて、
少なくとも1つの長手方向キャビティが前記心線の中に形成され、前記雄型コネクタ(1)が曲がっても前記長手方向キャビティは略々影響を受けず、
又、前記導体(5)は前記1つ又は複数のキャビティ内に配置され、もって、前記雄型コネクタ(1)が曲げられても損傷から保護されることを特徴とする雄型コネクタ。
A male connector (1) for a guide wire (2), comprising: a core wire (3); a plurality of conductive members (4) spaced longitudinally along the core wire (3); A plurality of conductors (5) disposed along the core wire (3), wherein the conductors (5) are male connectors each connected to a corresponding conductive member (4);
At least one longitudinal cavity is formed in the core and the longitudinal cavity is substantially unaffected when the male connector (1) bends;
The male connector is characterized in that the conductor (5) is disposed in the one or more cavities so that the male connector (1) is protected from damage even if it is bent.
前記心線(3)の外装面における少なくとも2つの箇所は、前記心線(3)が自動的に心合わせできるように、配置された請求項1に記載の雄型コネクタ。  The male connector according to claim 1, wherein at least two locations on the exterior surface of the core wire (3) are arranged so that the core wire (3) can be automatically centered. 前記心線(3)の断面をD字形とすることで、前記キャビティが、前記円筒状導電性部材(4)の内面と、D字形の形状の前記心線(3)の平坦な部分との間に形成された請求項1又は2に記載の雄型コネクタ。  By making the cross section of the core wire (3) D-shaped, the cavity has an inner surface of the cylindrical conductive member (4) and a flat portion of the D-shaped core wire (3). The male connector according to claim 1, wherein the male connector is formed therebetween. 前記導電性部材(4)と前記心線(3)との間に連続的な絶縁材料(6)が配置され、D字形の前記心線(3)の湾曲した部分と前記導電性部材(4)の内面との間に最小限度の絶縁材料(6)が設けられた請求項2又は3に記載の雄型コネクタ。  A continuous insulating material (6) is disposed between the conductive member (4) and the core wire (3), and the curved portion of the D-shaped core wire (3) and the conductive member (4). The male connector according to claim 2 or 3, wherein a minimum amount of an insulating material (6) is provided between the inner surface of the connector. 前記キャビティは、前記心線(3)の外装面の長手方向凹所により形成された請求項1〜4の何れかに記載の雄型コネクタ。  The male connector according to any one of claims 1 to 4, wherein the cavity is formed by a longitudinal recess in an exterior surface of the core wire (3). 前記心線(3)の外装面の長手方向凹所によって複数のキャビティが形成され、前記導体(5)は各々別個の該凹所内に配置された請求項1〜5の何れかに記載の雄型コネクタ。  The male according to any one of claims 1 to 5, wherein a plurality of cavities are formed by longitudinal recesses in the exterior surface of the core wire (3), and the conductors (5) are each disposed in a separate recess. Type connector. 前記心線(3)の外装面の長手方向凹所によって複数のキャビティが形成され、該凹所は各々少なくとも1つの導体(5)を受け入れる請求項1〜6の何れかに記載の雄型コネクタ。  A male connector according to any one of the preceding claims, wherein a plurality of cavities are formed by longitudinal recesses in the exterior surface of the core (3), each recess receiving at least one conductor (5). . 前記導電性部材(4)と前記心線(3)との間に連続的な絶縁材料(6)が配置され、前記心線(3)の円筒状部分と前記円筒状導電性部材(4)の内面との間に最小限度の絶縁材料(6)が設けられた請求項5〜7の何れかに記載の雄型コネクタ。  A continuous insulating material (6) is disposed between the conductive member (4) and the core wire (3), and the cylindrical portion of the core wire (3) and the cylindrical conductive member (4). The male connector according to claim 5, wherein a minimum insulating material (6) is provided between the inner surface of the male connector and the inner surface of the male connector. 前記キャビティは前記心線(3)の長手方向穴により形成された請求項1〜8の何れかに記載の雄型コネクタ。  The male connector according to claim 1, wherein the cavity is formed by a longitudinal hole of the core wire (3). 前記導電性部材(4)と前記心線(3)との間に連続的な絶縁材料(6)が配置された請求項9に記載の雄型コネクタ。  The male connector according to claim 9, wherein a continuous insulating material (6) is disposed between the conductive member (4) and the core wire (3). 前記導体(5)の少なくとも1つは対応する導電性部材(4)の基端に接続された請求項1〜10の何れかに記載の雄型コネクタ。  The male connector according to any one of claims 1 to 10, wherein at least one of the conductors (5) is connected to a proximal end of a corresponding conductive member (4). 前記導体(5)が接続される箇所であるそれぞれの導電性部材(4)の末端に戻る前に、前記導体(5)の少なくとも1つが、雄型コネクタ(1)の基端に向けて伸びるループ状に引出されている請求項1〜10に記載の雄型コネクタ。  At least one of the conductors (5) extends toward the proximal end of the male connector (1) before returning to the end of the respective conductive member (4) where the conductor (5) is connected. The male connector according to claim 1, which is drawn out in a loop shape. 前記心線(3)に絶縁材料層(12)が設けられた請求項1〜12の何れかに記載の雄型コネクタ。  The male connector according to any one of claims 1 to 12, wherein an insulating material layer (12) is provided on the core wire (3). 前記絶縁材料(12)はポリマーマトリックス内のセラミック粒子で形成された請求項13に記載の雄型コネクタ。  The male connector of claim 13, wherein the insulating material (12) is formed of ceramic particles in a polymer matrix. 前記絶縁材料(12)はセラミック状態に酸化させた金属で形成された請求項13に記載の雄型コネクタ。  The male connector according to claim 13, wherein the insulating material (12) is formed of a metal oxidized to a ceramic state. 前記心線(3)はチタンで形成され、その表面は酸化されて二酸化チタンとなっている請求項15に記載の雄型コネクタ。  The male connector according to claim 15, wherein the core wire (3) is made of titanium, and the surface thereof is oxidized to titanium dioxide. 前記心線(3)は、Alに酸化されたアルミニウム被覆を有する金属で形成された請求項15に記載の雄型コネクタ。It said core wire (3) is a male connector according to claim 15 formed of a metal having an aluminum coating which is oxidized to Al 2 O 3. 前記心線(3)は絶縁材料で形成された請求項1〜12の何れかに記載の雄型コネクタ。  The male connector according to any one of claims 1 to 12, wherein the core wire (3) is formed of an insulating material. 前記導体(5)に絶縁材料層(13)が設けられた請求項1〜18の何れかに記載の雄型コネクタ。  The male connector according to claim 1, wherein the conductor (5) is provided with an insulating material layer (13). 前記雄型コネクタ(1)内の心線(3)は前記ガイドワイヤー(2)内の心線から分離している請求項1〜19の何れかに記載の雄型コネクタ。  The male connector (1) according to any of claims 1 to 19, wherein the core wire (3) in the male connector (1) is separated from the core wire in the guide wire (2). 前記雄型コネクタ(1)内の心線(3)は前記ガイドワイヤー(2)内の心線の伸長部である請求項1〜19の何れかに記載の雄型コネクタ。  The male connector (1) according to any one of claims 1 to 19, wherein the core wire (3) in the male connector (1) is an extension of the core wire in the guide wire (2).
JP2002323954A 2001-11-07 2002-11-07 Male connector for guide wire Expired - Fee Related JP4252790B2 (en)

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SE0103696A SE523337C2 (en) 2001-11-07 2001-11-07 Male connector for guide wire used in treatment of coronary disease, has core wire formed with longitudinal cavity in which conductors are placed and protected from damage, during bending
SE0103696-1 2001-11-07
US09/986,117 US6908442B2 (en) 2001-11-07 2001-11-07 Bending resistant male connector for a guide wire
US09/986117 2001-11-07

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